Apparatus for Displaying a Changed Image State and Method of Controlling the Same

1. A method of controlling an image display device, the method comprising: displaying, via a display unit of the image display device, a plurality of thumbnails; in response to selection of one of the plurality of thumbnails, displaying an image corresponding to the selected thumbnail, via the display unit of the image display device, and activating a tracing mode, wherein the image is displayed as a full screen; receiving an input via a user input unit to change a state of the displayed full screen image; changing, via a controller of the image display device, the state of the displayed full screen image including one of enlarging the displayed image, reducing the displayed image, scrolling the displayed image and rotating the displayed image to display a first changed display state of the image; receiving an input via a user input unit to change a displayed state of the first changed display state of the image; changing, via the controller, the displayed state of the first changed display state of the image including one of enlarging the displayed image, reducing the displayed image, scrolling the displayed image and rotating the displayed image to display a second changed display state of the image; saving, via the controller, the one of the enlarging, reducing, scrolling and rotating associated with the displayed first changed display state of the image and associated with the displayed second changed display state of the image as history information of the changed state of the displayed image in a memory associated with the image display device in response to displaying the image as the full screen again to end the tracing mode after the state of the displayed image is changed; receiving, via the controller, a revival command for the image corresponding to the selected thumbnail; and in response to reception of the revival command, reviving the changed state of the displayed image in accordance with the saved history information on the display unit, wherein the history information is only saved while the tracing mode is active, and wherein the tracing mode is activated if a mode activate command is input or if a display state of the displayed image is changed in response to a random display state change command and then maintained for a prescribed duration.

2. The method of claim 1 , wherein the saved history information includes at least one of display coordinates of the changed state of the displayed image and a display magnification of the changed state of the displayed image.

3. The method of claim 1 , wherein the display unit comprises a touchscreen, wherein the input includes a touch and drag on the displayed image, and wherein the history information includes changes made to the state of the displayed image based on the touch and drag.

4. The method of claim 1 , further comprising: transmitting, via a wireless communication unit of the image display device, the image and the saved history information.

5. The method of claim 1 , wherein the revival command includes selecting the image from an image list after the history information is saved.

6. The method of claim 1 , wherein the image includes an image photographed via a camera, wherein the image is displayed in a review mode, and wherein the revival command includes a command for entering the review mode after performing an additional photographing via the camera.

7. An apparatus for displaying an image, comprising: a display unit; and a controller configured to: display a plurality of thumbnails on the display unit; in response to selection of one of the plurality of thumbnails, display an image corresponding to the selected thumbnail on the display unit and activate a tracing mode, wherein the image is displayed as a full screen; change a state of the displayed full screen image including one of enlarging the displayed image, reducing the displayed image, scrolling the displayed image and rotating the displayed image to display a first changed display state of the image; change the displayed state of the first changed display state of the image including one of enlarging the displayed image, reducing the displayed image, scrolling the displayed image and rotating the displayed image to display a second changed display state of the image; save the one of the enlarging, reducing, scrolling and rotating associated with the displayed first changed display state of the image and associated with the displayed second changed display state of the image as history information of the changed state of the displayed image in a memory associated with the apparatus in response to displaying the image as the full screen again to end the tracing mode after the state of the displayed image is changed; receive a revival command for the image corresponding to the selected thumbnail; and in response to reception of the revival command, revive the changed state of the displayed image in accordance with the saved history information on the display unit, wherein the controller is further configured to only save the history information while the tracing mode is active, and wherein the tracing mode is activated if a mode activate command is input or if a displayed state of the image is changed in response to a random display state change command and then maintained for a prescribed duration.

8. The apparatus of claim 7 , wherein the saved history information includes at least one of display coordinates of the changed state of the displayed image and a display magnification of the changed state of the displayed image.

9. The apparatus of claim 7 , wherein the display unit comprises a touchscreen, wherein the input includes a touch and drag on the displayed image, and wherein the history information includes changes made to the state of the displayed image based on the touch and drag.

10. The apparatus of claim 7 , further comprising: a wireless communication unit configured to transmit the image and the saved history information.

11. The apparatus of claim 7 , wherein the revival command includes selecting the image from an image list after the history information is saved.

12. The apparatus of claim 7 , wherein the image includes an image photographed via a camera, and wherein the controller is further configured to display the image in a review mode, and wherein the revival command includes a command for entering the review mode after performing an additional photographing via the camera.

13. The apparatus of claim 7 , wherein in response to reception of the revival command, the state of the displayed full screen image is scrolled out from the specific area while the displayed first state of the image is scrolled into the specific area.

14. The apparatus of claim 13 , wherein a direction of the scrolling is determined according to the history information.